tree 698f172ce16a9161c8e164914fb0b0c383ce3156
parent 996c335c4a51cb04a41526fa34e8e1dbca4640bf
author Benny Siegert <bsiegert@gmail.com> 1329783919 +1100
committer Nigel Tao <nigeltao@golang.org> 1329783919 +1100
golang-hg a06dc69107c7c7bd85a5867890f3a28352bd8663

go.image/tiff: optimize reading uncompressed files from a tiff.buffer.

In case the image is read via a tiff.buffer, avoid copying the
data strip before decoding it. Remove corresponding TODO.
Speeds up reading uncompressed images (which is the common case)
and uses much less memory.

benchmark                      old ns/op    new ns/op    delta
BenchmarkDecodeCompressed        4619438      4630774   +0.25%
BenchmarkDecodeUncompressed       260809       219875  -15.70%

R=nigeltao
CC=golang-dev
https://golang.org/cl/5683050